Home / 2,186.55-3,280.68-1,261.62

Finding the Fourth Proportional to 2,186.55, 3,280.68 and 1,261.62

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Solution

The fourth proportional to 2,186.55, 3,280.68 and 1,261.62 is: 1,892.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.55 : 3,280.68 = 1,261.62 : x
  2. Step 2: Convert to fraction form
    2,186.55/3,280.68 = 1,261.62/x
  3. Step 3: Cross multiply
    2,186.55x = 3,280.68 × 1,261.62
  4. Step 4: Simplify right side
    2,186.55x = 4,138,971.50
  5. Step 5: Solve for x
    x = 4,138,971.50/2,186.55
  6. Step 6: Final answer
    x = 1,892.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.